The Hebrew word aph functions doubly: as a conjunction meaning 'also' or 'moreover' (over 130 times), and as a noun meaning 'nose' or 'nostril' — by metonymy, 'anger,' since flaring nostrils were the ancient physiological sign of rage.
The metaphorical use of aph for anger is theologically significant: God is repeatedly described as having aph — divine wrath expressed through this Hebrew idiom. 'The LORD's anger (aph) burned against Israel' is a recurring prophetic refrain.
Proverbs 14:29 prescribes 'slow to aph' as the character God models: 'erek aph' (literally 'long of nose') means patient forbearance. The New Testament echoes this: 'Be slow to anger' (James 1:19) draws on the same tradition.